An Intro to Reiserfs
An Intro to Reiserfs: "To begin with, the Reiserfs filesystem is more efficient with all sizes of data files. It's especially efficient with small sized files due mainly to its ability to write blocks of any size. For example, under an ext2 filesystem, a file that's actually 50 bytes in size takes up a block of space allocated by ext2 as 1024 bytes, or 1 KB. Under Reiserfs, these small files can be written in only space needed by the file, which can save you quite a remarkable chunk of disk space."